JP3426389B2 - Moving agricultural machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] This invention challenges relates relates to a riding type rice planting machine continuously performing NaeUe work includes a seedling mounting table and the planting claw. 2. Description of the Related Art In a rice transplanter in which an engine is mounted on a front part of a vehicle body, an engine output shaft is normally taken out of a transmission at a rear part of the vehicle body toward the rear of the machine body or to the left and right sides. [0003] However, when the engine output shaft is taken out behind the vehicle body, the exhaust air (hot air) of the engine is also discharged to the driver's seat side behind the engine. There has been a problem that the environment is deteriorated, and that the output power transmission device of the engine is arranged in a narrow space between the engine and the driver's seat, resulting in poor maintainability. In addition, when taken out to the side of the fuselage, there is a drawback that the structure of an output transmission system for the rear transmission case and the working machine (directly connected to the engine) becomes extremely complicated. [0004] The present invention provides an engine on the front of the vehicle body, a driver's seat in the center of the vehicle body, and various agricultural working machines in the rear of the vehicle body, and mounts the engine on the vehicle body frame. In a rice transplanter , the engine output shaft protrudes forward of the engine, and a counter shaft for transmitting this engine output is disposed in the front-rear direction below the engine.
Insert the counter shaft into a pipe fixed below the base,
Place the engine exhaust and muffler in front of the engine
The muffler is installed in a position opposite to the left and right direction of the shaft.
Between the counter and exhaust shaft and the counter shaft,
Side output shaft to improve the durability of the transmission system.
And at the same time, the maintainability around the engine is improved . Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of an engine section, FIG. 2 is a side view of a riding rice transplanter, and FIG. 3 is a plan view of the same. In FIG. 1, (1) is a traveling vehicle on which an operator rides, and an engine (2) is centered. It is mounted on a body frame (3), which is a frame, and a front axle case (5) supports a paddy traveling front wheel (6) in front of a transmission case (4), and a rear axle is provided at a rear portion of the transmission case (4). Case (7)
The rear axle case (7) supports the paddy field traveling rear wheel (8). A spare seedling mounting table (10) is attached to both sides of the hood (9) covering the engine (2) and the like, and the transmission case (12) is mounted by a body cover (12) on which an operator rides via a footrest (11). 4) and the like, a driver's seat (13) is mounted above the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) and behind the hood (9). [0008] In the figure, (15) is a planting section which is a working machine equipped with a seedling mounting table (16) for planting six rows and a plurality of planting claws (17). A forward tilting seedling mounting table (16) made of synthetic resin is supported on a planting case (20) via a lower rail (18) and a guide rail (19) so as to be reciprocally slidable left and right and at a constant speed in one direction. A rotary case (21) to be rotated is supported by the planting case (20), and a pair of claw cases (22) and (22) are disposed at symmetrical positions about the rotation axis of the case (21). Attach the planting nails (17) and (17) to the tips of the nail cases (22) and (22). A hitch bracket (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and is provided via a lifting link mechanism (27) including a top link (25) and a lower link (26). A hitch bracket (24) is connected to the rear side of the traveling vehicle (1), and a lifting cylinder (28) for raising and lowering the planting portion (15) is connected to the lower link (26) via the link mechanism (27). At the same time as the front and rear wheels (6) and (8) are driven and moved, one seedling of seedlings is taken out from the seedling mounting table (16) which is reciprocally slid left and right by a planting claw (17), and the seedlings are continuously taken. It is configured to perform planting work. In the drawing, (29) is the main speed change lever, (3)
0) is a planting operation lever which is also an auxiliary transmission lever, and (31)
Is a setting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals, (34)
Is a center float for two-row equalization, (35) is a side float for two-row equalization, and (36) is a side-row fertilizer for six rows. Further, as shown in FIGS. 4 to 6, a gantry (37) is integrally fixed to a front upper surface of the vehicle body frame (3) which is inclined to a low front and rear height (inclination angle of about 4 degrees). 37) On the upper surface where the front-rear direction is substantially horizontal,
8) The engine stand (39) is mounted via..., The engine (2) is mounted on the engine stand (39), a fuel tank (40) is provided on the left side of the engine (2), and the engine (2) is Attach the muffler (41) on the right side,
A battery (43) is attached to the front end side of the vehicle body frame (3) via a front frame (42). Further, a case base (44) is integrally fixed to the body frame (3), a steering case (45) is mounted on the case base (44), and inserted into a tubular body (46) as a handle column. Connect the steering shaft (14a) of the steering handle (14) to the left and right body frame (3).
(3) The output shaft (47) is protruded from the lower surface of the steering case (45) at the approximate center of the steering case (45), and the left and right front wheels (6), (6) are turned. The steering arm (48) is connected to the output shaft (4
7). As shown in FIGS. 9 and 10, a cylindrical bearing body (49), which is a pipe which is substantially horizontal in the front-rear direction, is welded and fixed to an engine mount (39) below the engine (2). And a counter shaft (50) is attached to the bearing body (49).
A counter pulley (51) is attached to the front end of a counter shaft (50) that projects and supports the bearing body (49) forward, and an alternator (52) is installed in front of the engine (2).
The left and right body frames (3)
(3) An output shaft (53) protrudes in front of the engine (2) substantially at the center above and an output pulley (54) is attached to the output shaft (53). The output pulley (54) is connected to the input pulley (56) of the alternator (52) via the V-belt (57) while being connected to the pulley (51) via V-belts (55) and (55). . As shown in FIGS. 7 and 8, a rear axle case (7) is bolted and fixed to the rear end of the vehicle body frame (3), and a transmission case (4) rear surface is provided on the front surface of the rear axle case (7). The clutch case (58) is integrally formed on the right front surface of the transmission case (4), and the transmission case (5) is also a transmission case on the front surface of the clutch case (58).
9) Connect the right rear surface and fix it.
8) The hydraulic pump (60) for operating 8) is fixed to the left rear surface of the belt speed change case (59), and is positioned lower than the upper surface between the left and right body frames (3) and (3) having a square pipe shape. Each case (4) (58) (59) and the hydraulic pump (60) are suspended and fixed, and a transmission shaft (61) with a universal joint is provided between the rear end of the counter shaft (50) and the belt transmission case (59). The transmission of the engine (2) is transmitted to the belt transmission case (59), and the front wheel transmission shaft (62) is provided between the front axle case (5) and the transmission case (4). It is configured to transmit to the front and rear wheels (6) and (8) via the axle cases (5) and (7). Further, a lower link fulcrum shaft (63) is provided at the rear end of the vehicle body frame (3), and the lower fulcrum shaft (6) is provided.
3) The front end of the lower link (26) is attached, and a gate-shaped support (64) is erected between the rear ends of the left and right body frames (3) and (3). 65), and the front end of the top link (25) is attached to the base (65) via the top link fulcrum shaft (66). Further, a pedal fulcrum pipe (67) provided with the brake pedal (33) is provided, and the pipe (67) is inserted into the left and right body frames (3) (3), and both ends of the pipe (67) are provided. Is fixed to the body frame (3) by welding, and the pipe (67) is attached as a connecting member of the left and right body frames (3) and (3), and the left and right sub-frames (68) and (6) are attached with the lifting cylinder (28).
8) and a sub-frame (6
8) The front end is welded and fixed to the pedal fulcrum pipe (67), and the rear end of the subframe (68) is welded and fixed to the upper end of the column (64). Further, the input / output pulleys (69) and (70) and the speed change belt (71) for changing the winding ratio steplessly by changing the winding diameter are provided inside the belt speed change case (59) and have a universal joint. The front end of the input shaft (72) of the belt transmission case (59) is connected to the rear end of the counter shaft (50) via the transmission shaft (61), and the input shaft (72)
A hydraulic pump (60) is directly connected to the rear end, and a multi-disc friction dry clutch (73) which is intermittently operated by a clutch pedal (32) is provided in a clutch case (58). The output shaft (74) is connected to the input shaft (75) of the transmission case (4) via the clutch (73), and the transmission case (4)
The driving force input to the front wheel transmission shaft (62)
And it is comprised so that it may transmit to the planting PTO shaft (76) of the back side, etc. As shown in FIGS. 1 and 6, an air cleaner (77) for taking in clean air into the engine combustion chamber is disposed on the upper left outside of the engine (2), while an air cleaner (77) on the front side of the engine (2) is provided. An exhaust pipe (78) connected to an exhaust port is connected to the muffler (41), and a heat insulating cover (7) surrounding the exhaust pipe (78).
9) is mounted on the engine (2), and the cover (79) prevents exhaust heat from diffusing into the bonnet (9). As shown in FIGS. 1, 6, 9 and 10, an alternator (52) disposed in front of the engine (2) is a muffler (41) and an exhaust pipe (78). Exhaust part (80) composed of
And mounted directly on the front surface of the engine (2) at a position opposite to that of the engine (2). An alternator receiver (82) is detachably attached to the front surface of the engine (2) on the left side of the engine output shaft (53) via bolts (81). Attach the alternator receiver (8
The upper and lower projecting edges (52a) and (52) of the alternator (52) are provided on the bent edge (82a) and the upright shaft portion (82b) of (2).
b) is fixed via bolts (83), and the input pulley (56) of the alternator (52) facing the front of the engine (2) is connected to the output pulley (5) of the engine (2).
4) is interlocked via a V-belt (57) to drive the alternator (52) to supply power to the blower and the like of the fertilizer applicator (36). Further, the counter shaft (50) is also provided in a direction opposite to the left and right of the exhaust portion (80), and a transmission system for pulleys (51) and (54) and a belt (55) is provided on the front side of the engine (2). (84) the output shaft (53) of the engine (2)
The exhaust air (80) and the transmission system (84) are disposed near the forefront of the vehicle body at a distance from the exhaust pipe (78) on the front side of the engine (2). To facilitate the cooling and lowering of the ambient temperature, thereby improving the engine efficiency and extending the service life. Further, in this case, the alternator (52), the exhaust part (80), and the transmission system (84)
By placing it near the front of the engine (2),
The balance between the planting portion (15) and the front and rear is improved, and the rotation from the engine (2) is controlled by the counter shaft (50).
A high-speed rotation output power transmission system (84) for transmitting power to the motor and the alternator (52) is provided at the foremost side of the vehicle body, and is separated from the driver's seat (13) at the center of the vehicle body, so that cold air can be taken into the power transmission system (84). In addition to improving, the transmission system (8
The transmission of the noise and the rising ambient temperature generated in 4) to the driver's seat (13) is minimized to optimize the driving environment and improve safety. Further, the counter shaft (50) is provided on the lower side of the engine (2) so that the shaft length (L) substantially matches the front-rear width of the engine (2). And the transmission shaft (61) is tilted forward and backward in the vertical direction of the vehicle body frame (3) in a direction opposite to the inclination of the vehicle body frame (3) within the vertical width of the vehicle body frame (3) in a side view. In addition, it is possible to avoid the interference with the installation parts of the vehicle body frame (3) such as the fulcrum pipe (67), to enable the compact arrangement thereof, and to use the transmission shaft (3) with the left and right vehicle body frames (3) and (3). 61), so that the left and right sides thereof are safely protected, the durability of the transmission shaft (61) is improved, and the transmission performance is stably maintained for a long period of time. As shown in FIG. 11, a stopper device (85) for restricting the planting portion (15) from descending beyond the setting is provided with a lower link (26) of a link mechanism (27) and a planting portion (1).
5) A stopper member (86) (87) which is provided between the hitch brackets (24) and has inclined contact surfaces (86a) (87a) on inner surfaces of the lower link (26) and the hitch bracket (24) facing each other. The stopper members (86) and (87) are normally kept apart from each other during normal operation, while the link (26) and the bracket (24) are at an acute angle when the planted portion (15) is lowered beyond the setting. The stopper members (86) and (87) interfere with each other by bending to prevent further lowering. As shown in FIG. 12, a pedal hook (88) for connecting the left and right brake pedals (33) (33).
A pedal communication detection switch (90) for detecting engagement of the main shift lever (29) with the hook stopper (89), and a travel detection switch (91) for detecting the travel position of the main shift lever (29). A controller (93) for controlling a lift valve (92) of the lift cylinder (28)
Are connected to these switches (90) and (92). Then, as shown in FIG. 13, the left and right brake pedals (3
0) When the connection of (30) is detected by the switch (90), or the traveling on the road or the like is detected by the switch (9).
At the time of detection by 1), the planting section (15) is lowered to a height substantially equal to the minimum ground height of the machine, which is a safe range, to enable stable and good running of the vehicle body with a sufficient fall angle. , To improve safety. This embodiment is constructed as described above, and the engine output shaft (53) is projected forward of the engine (2), and the vehicle body is connected to a counter shaft (50) for communicating the bottom of the engine (2) forward and backward. Pulley (51) (5
4) and the belt (55), it is possible to improve the maintainability of the transmission system (84) such as the replacement of the belt (55) and to improve the intake of cold air into the high-speed rotating transmission system. It is possible to extend the service life of the transmission system by improving the temperature and preventing the temperature rise, and minimize the noise and temperature rise generated in the high-speed rotation transmission system (84) from being transmitted to the driver's seat (13). Therefore, the driving environment at the position of the driver's seat (13) can be kept as good as possible. Further, by arranging the exhaust part (80) such as the muffler (41) and the exhaust pipe (78) near the front end of the vehicle body, it is possible to improve the cooling effect and improve the engine efficiency. it can. Further, by supporting the counter shaft (50) on a bearing body (49) fixed to the lower side of the engine stand (39), not only the support strength can be improved, but also the safety of the counter shaft (50) can be improved. Protection can be achieved, and the accident of entanglement or entanglement with the shaft (50) during rotation of the counter shaft (50) can be prevented.
The safety at the time of maintenance can be improved. As is apparent from the above embodiments, the present invention provides an engine (2) at the front of the vehicle body, a driver's seat (13) at the center of the vehicle body, and various agricultural work machines (15) at the rear of the vehicle body. Equipped
And mount the engine (2) on the body frame (3)
The engine output shaft (53) is projected forward of the engine (2), and a counter shaft (50) for transmitting the output of the engine (2) is disposed in the front-rear direction below the engine (2) .
Fixed on the underside of the engine stand (39)
Insert the counter shaft (50) into the pipe (49)
Remove the exhaust (80) and muffler (41) of the engine (2).
Engine (2) front side, left and right opposite to counter shaft (50)
And the muffler (41) and
Between the exhaust part (80) and the counter shaft (50),
An output shaft (53) on the front side of the engine (2) is provided .
When the durability of the transmission system (84) can be improved,
In addition, the maintainability around the engine (2) can be improved . [0027]

[Brief description of the drawings] FIG. 1 is an explanatory side view of an engine unit. FIG. 2 is an overall side view of the riding rice transplanter. FIG. 3 is an overall plan view of the riding rice transplanter. FIG. 4 is a side view of the traveling vehicle. FIG. 5 is a plan view of the traveling vehicle. FIG. 6 is an explanatory front view of an engine unit. FIG. 7 is an explanatory side view of a transmission case. FIG. 8 is an explanatory plan view of a transmission case. FIG. 9 is a partial explanatory view of an engine unit. FIG. 10 is a partial explanatory view of an engine unit. FIG. 11 is an explanatory side view of a link mechanism. FIG. 12 is a descent control circuit diagram. FIG. 13 is a flowchart. [Explanation of symbols] (2) Engine (13) Driver's seat (15) Planting unit (work equipment) (39) Engine stand (49) Bearing body (pipe) (50) Counter axis (80) Ventilation section

Continuation of the front page (56) References JP-A-4-262705 (JP, A) JP-A-6-191295 (JP, A) Fully open Sho 61-84026 (JP, U) Really open Sho 56-127128 (JP, A) , U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A01C 11/02 B60K 17/04

Claims (1)

(1) An engine (2) at the front of the vehicle body, a driver's seat (13) at the center of the vehicle body, and various agricultural work machines (1) at the rear of the vehicle body.
5) equipped , engine (2) and body frame (3)
Mounted on the top and the engine output shaft (53) with the engine (2)
In a rice transplanter in which a counter shaft (50) for projecting forward and transmitting the output of the engine (2) is disposed in the front-rear direction below the engine (2), the counter stand (39)
Counter shaft (50) in the pipe (49) fixed to the side
The engine (2) exhaust section (80) and muffler
(41) The counter shaft (50) in front of the engine (2)
And the muffler
(41) and the exhaust part (80), and the counter shaft (5
0), the output shaft (53) on the front side of the engine (2)
A rice transplanter characterized by being provided .